DeleteOnClick vs GNU shred

DeleteOnClick is a Windows utility for securely deleting files, wiping free disk space, and emptying the Recycle Bin. Before wiping a file, it removes dates and attributes and renames the file. Free-space wiping has a faster mode described as less secure and a separate secure mode. The maker warns that files securely deleted with DeleteOnClick cannot be undeleted. DeleteOnClick is one of seven utilities in the free OnClick Utilities suite, available for 32-bit and 64-bit Windows. The listed download is version 2.6.7.0, and 2BrightSparks publishes a SHA2-256 checksum. The suite can be used indefinitely at no cost for personal, educational, charity, government, and commercial purposes. Freeware users receive forum support, with help files, online help, articles, tutorials, and a knowledge base also available. The publisher digitally signs distributed software.

GNU shred has no write-up on Specifiction yet; its figures are above.